The most common and most likely answer to this crossword clue is the 8 letter word HOSTAGES
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The straight part
We know that "Pawns" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pawns = hostages.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does HOSTAGES mean?
HOSTAGES noun- A person given as a pledge or security for the performance of the conditions of a treaty or similar agreement, such as to ensure the status of a vassal.
- A person seized in order to compel another party to act (or refrain from acting) in a certain way, because of the threat of harm to the hostage.
- Something that constrains one's actions because it is at risk.
- One who is compelled by something, especially something that poses a threat; one who is not free to choose their own course of action.
- The condition of being held as security or to compel someone else to act or not act in a particular way.